Filter for a facemask



FIG. 1 is a front perspective view of a filter for a facemask showing my new design, shown in a partially unfolded configuration;

FIG. 2 is a left side elevational view thereof, shown in a folded configuration;

FIG. 3 is a right side elevational view thereof, shown in a folded configuration;

FIG. 4 is a front elevational view thereof, shown in a partially unfolded configuration;

FIG. 5 is a rear elevational view thereof, shown in a partially unfolded configuration;

FIG. 6 is a top plan view thereof, shown in a partially unfolded configuration;

FIG. 7 is a bottom plan view thereof, shown in a partially unfolded configuration;

FIG. 8 is a front perspective view thereof, shown in an unfolded configuration;

FIG. 9 is a lower front perspective view thereof, shown in an unfolded configuration; and,

FIG. 10 is a rear perspective view thereof, shown in an unfolded configuration.

The broken lines showing a facemask depict environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a filter for a facemask, as shown and described. 